Anna McMasters is a main antagonist of the american book series Beacon Street Girls. She is one of the mean girls at school, she and her friend Joline are known for their cruelty and meanness. She is tall, blond, and wants to be a model. She has a sticker on her locker saying "It's an inside joke...and you're on the outside!" Anna is good at sports, often playing on the same teams as Avery. Anna is referred to as one of the "Queens of Mean" by the BSG and the rest of the school. Anna doesn't like Kiki very much because Kiki is trying to take away her friendship with Joline.